Oddbean new post about | logout
▲ ▼
oscpacey | 4 months ago (raw) | root | parent | reply | flag 
 Really? Could you explain or show an example of a shop doing that?
▲ ▼
Slyghtning | 4 months ago (raw) | root | parent | reply | flag 
 Just look at any groceries receipt, there are pubkey sha and sig data on it. Many POS terminals are doing that by default.